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Fridrich Miescher
First Dicovered DNA from white blood cells in pus. -
Walther Flemming
German biologist who is know as the founder of cytogenetics -
Wilson and Stevens
Discovered what the chromosomal basis of sex was. -
Walter Surron
Theorized that the Mendelian laws of inheritance could be applied to chromosomes at the cellular level. -
Thomas Hunt Morgan
Made discoveries ralating the role the chromosome plays in heredity. -
Beadle and Tatum
Proved theory that hereditary diseases are “inborn errors of metabolism” missing or false steps in the body’s chemical pathways -
Oswald Avery
Experimented in mice to show that DNA is the transforming principle. -
Rosiland Franklin
Used X-ray crystallography to take a picture of DNA -
Maurice Wilkins
Worked with Franklin to take X-ray diffraction pictures of DNA -
Edwin Chargaff
Isolated DNA from differnet organism and measured the levels of each of the bases. -
Watson and Crick
Credited with the discovery of the double helix shape of DNA -
Hershey and Chase
Experimented in bacterial conjugation and proved that bacteria mates. -
Joe Hin Tjio
First person to recognize the normal number of human chromosomes. -
Messelson and Stahl
Showed that new DNA is made from two copies of the old DNA -
Marshall Nirenberg
Credited with “breaking the genetic code” and describing how it operates in protein synthesis. -
Cohen and Boyer
Invented the technique of DNA cloning, the foundation of genetic engineering -
Frederick Sanger
Developed a method to determine the exact sequence of nucleotides in a gne -
Temin and Baltimore
Made discoveries concerning the interaction between tumor viruses and genitic material of the cell. -
Paul Berg
Pioneer in the field of recombinant DNA, the process of inserting DNA from another species into a molecule. -
Fred Sanger
Determined the base sequences in nucleic acids. -
Calgene
Biotechnology research and development firm -
Kerry Mullis
Invented the polymerase chain reaction method for copying specific regions of DNA -
Collins and Venter
Figured out a fast way to find the genes that make up the human genome.